Unbreak modern freetype on PHP 7.3

php-freetype-pkgconfig.patch

From c2355f2b6f193f26ee0c6e0479c760e8bd3daf9b Mon Sep 17 00:00:00 2001
From: Calvin Buckley <calvin@cmpct.info>
Date: Sat, 25 Apr 2020 14:57:25 -0300
Subject: [PATCH] Don't use freetype-config, use pkg-config for freetype

Proper fix is in #3632, but might be too dependent on 7.4 changes.
---
 ext/gd/config.m4 | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/ext/gd/config.m4 b/ext/gd/config.m4
index 498d870785..695ee75efb 100644
--- a/ext/gd/config.m4
+++ b/ext/gd/config.m4
@@ -183,21 +183,14 @@ AC_DEFUN([PHP_GD_XPM],[
 
 AC_DEFUN([PHP_GD_FREETYPE2],[
   if test "$PHP_FREETYPE_DIR" != "no"; then
+    AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
 
-    for i in $PHP_FREETYPE_DIR /usr/local /usr; do
-      if test -f "$i/bin/freetype-config"; then
-        FREETYPE2_DIR=$i
-        FREETYPE2_CONFIG="$i/bin/freetype-config"
-        break
-      fi
-    done
-
-    if test -z "$FREETYPE2_DIR"; then
-      AC_MSG_ERROR([freetype-config not found.])
+    if ! $PKG_CONFIG --exists freetype2; then
+      AC_MSG_ERROR(freetype2 is not installed)
     fi
 
-    FREETYPE2_CFLAGS=`$FREETYPE2_CONFIG --cflags`
-    FREETYPE2_LIBS=`$FREETYPE2_CONFIG --libs`
+    FREETYPE2_CFLAGS=`$PKG_CONFIG --cflags freetype2`
+    FREETYPE2_LIBS=`$PKG_CONFIG --libs freetype2`
 
     PHP_EVAL_INCLINE($FREETYPE2_CFLAGS)
     PHP_EVAL_LIBLINE($FREETYPE2_LIBS, GD_SHARED_LIBADD)
-- 
2.25.1